The contorno(s) (contorni is really the correct plural of contorno) are the vegetables or side-dishes that accompany the secondo piatto. There can be as few as one contorno or as many as five or six, depending on the number of secondi.

Artichokes with potatoes (Carciofi e patate soffritti) 

Bell peppers, Fried (Peperoni in padella)

Bell peppers, Stuffed(Peperoni imbottiti)

Eggplant in tomato sauce (Melanzane a fungetiello) 

Eggplant, Stuffed (Melanzane imbottite di carne)

Mushrooms, Fried (Funghi alla Napoletana) 

Potato salad (Patate in insalata)

Roasted Potato Salad (Insalata di Patate Rostite)

Tomatoes (Baked), with rice (Pomodori col riso) 

Zucchini a "scapece"